When I try to install the wiki (version 1.20.2) on my website, it begins the
installer and says "Basic checks are performed to see if this environment is
suitable for MediaWiki installation. You should provide the results of these
checks if you need help during installation." Then it says PHP 5.3.15 is
installed. And that's it. I can't advance to the next step of the
installation process. Does anyone know what the problem is?